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How many columns were on a punch card in 1929?
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How many columns were on a punch card in 1929?

User VinayagaSundar
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22 columns

The original code used for punched card data recording in the 1890 census had 22 columns with 8 punch positions each (although there was room on the card for a total of 11 punch positions per column).

User Dave Haupert
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